Joseph a



(No Model.)

J. A. WILLIAMS. MAGNBTO ELECTRIC GENERATOR.

Patented Oct. 5,1897.

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UNITED STATES PAT NT CEEIcE.

JOSEPII IVILLIAMS, OF CLEVELAND, OHIO, ASSIGNOR TO THE WVILLIAMS ABBOTTELECTRIC COMPANY, OF SAME PLACE.

MAGNETO-ELECTRIC GENERATOR.

SPECIFICATION forming part of Letters Patent No. 591,365, dated October5, 1897.

Application filed May 3, 1897- Serial No. 684,865. (No model.)

To whom zit may concern:

Be it known that I, JosEPH A. WILLIAMS, a citizen of the United States,residing at Cleveland, in the county of Cuyahoga and State of Ohio, haveinvented certain new and useful Improvements in Magneto-ElectricGenerators, of which the following is a specification.

This invention relates to magneto-electric generators, and has for itsobject economy of IO construction and greater efficiency of electricalgeneration and it consists in the details of construction andcombination of parts substantially as hereinafter described, and pointedout in the claims.

In the accompanying drawings, Figure 1 is a vertical section of my newgenerator. Fig. 2 is an end view of the same. Fig. 3 is a detached viewof one of my new pole-pieces. Fig. l is a view of the flattened bolt.

In this generator there are three special features of improvement:first, a greater effective length of permanent magnets obtained by theuse of a new and novel pole-piece; second, the obtaining of a greaterwidth of permanent magnets in a given space by the use of flattenedbolts for the purpose of binding them together; third, a simple andefficient electrical shunt for the purpose of shortcircuitin g thewindings of the armature when out of action, in combination with thesupporting-pieces that hold the brush. These ends are obtainedsubstantially by the constructions and combinations as follows:

A A are end plates of non-magnetic metal, having the bearings for thearmature and driving shafts. The side edges are curved to conform to thearmature-circle, and have curved flanges a a, to which the pole-platesare secured; also have radial ribs a, which have bores leading from theout-side to the journal-bearings for the purpose of injecting oil forlubricating the armature-bearings.

B B are pole-plates, which are of novel construction, consisting ofsheet metal cut and stamped in the form shown in Fig. 3. The lower edgesof said plates are bent and folded upward with square corners, providinga narrow bottom edge. The upward fold b is cut or slitted vertically andthe cut edges of the two side-slitted portions are bent outward at rightangles to the plate. These are to form seats for the ends of thepermanent magnets. The pole-plates are fastened to the end plates A A byscrews 0 c.

The greater effective length of permanent magnets is obtained bychanging the point of contact of the pole-plates with the magnets fromthe usual place, which has heretofore been at or about a linehorizontally tangent with the top of the armature-circle, to a positionhorizontally bisecting the armature-circle; also, by turning up andflanging the lower part of the pole-plates a better and more efficientmagnetic contact is formed in the space between the line horizontallybisecting the armature-circle and the bottom ends of the magnets, andthe space 011 the permanent magnets between the flattened clamping-boltsand the horizontal center line of the armature-circle is gained foreffective use in this machine.

It is well known in magnetism that at a point where a permanent magnetis shortcircuited or its free ends closed by a magnetic material thelines of force traversing the armature or magnetic material are greatertoward the ends and are less on a nearer approach to the neutral axis ofthe magnet. It will therefore be seen that by attaching the pole-platesat or near the ends of the magnets and that by the use of the flattenedbolts and the peculiar construction of my pole-plates I am enabled toobtain a much better and more efficient contact, not only a greaterefficient length, but a greater width of magnet-steel, thereby coveringas near as possible the external surface of the rotative armature.

C C C are the permanent magnets, which are of greater width thanordinarily used, for the purpose of placing them as close together aspossible, leaving but a narrow space between them.

D D are binding-bolts, made flat to adapt them to fit between saidmagnets without reducing their strength, for with these bolts themagnets are firmly drawn into their seats in the pole-plates and thusmake a close and complete contact of the magnets with the poleplates.

E is a driving-shaft journaled in the bearings e c of the end plates AA, carrying the driving'gear-wheel G, which meshes with the pinion onthe armature-shaft. On said shaft is provided an automatic shunt,described as follows:

II is a disk and sleeve loosely placed on the shaft E, having a slot inwhich a pin on the shaft plays. This will allow the sleeve and disk tohave movement longitudinally while it revolves with the shaft. A spring.9 on said sleeve, bearing against the disk, and a collar 0' on theshaft force the disk away from the collar. E is a cylinder covering theshaft from the said disk H through the bearing to the driving-wheel Gr,which is fastened firmly on the cylinder. In the end of the cylinder ismade a notch g, fitting over a projection h on the disk.

J is an arm attached to the end plateAfor eon tacting with the disk. Itis fixed by screws jj through insulating fiber pieces 7; 7t, placed oneach side of an opening through the plate.

L is a strip of metal held by the screwsjj on the outside of the endplate A, which extends down to and contacts with a pin Z in the end ofthe armature-shaft. The pin Z is connected with the wire windin g of thearmature.

The operation as follows: \Vhen the machine is at rest, the disk 11 isin contact with the arm J, and a short circuit is thereby made. When themachine is put into operation, the turning of the crank turns thedriving-shaft in the cylinder E. This turns the disk and sleeve II,causing the riding of the projection 72 out of the notch g, forcing thedisk and compressing the spring 5' toward the collar and away from thearm .T. This opens the short circuit. Now the continued rotations of theshaft E carry the wheel G with it by the binding of the cylinder on theshaft, and the armature is then revolved.

Having described my invention, I claim- 1. In a magneto-electricgenerator, the pol 0- piece consisting of a plate cut, stamped andformed with the lower edge slitted folded upward, and with the outwardbends forming seats for the permanent magnets, substantially asdescribed.

2. In a magneto-electric generator, the com bination with the magnets CC O, of the flat tened bolts D D, substantially as and for the purposeset forth.

3. In a magnetoelectric generator, the combination with thedriving-shaft E of the cylinder ll, notch g in end of said cylinder,sleeve and disk II, projection 71. on said disk engaging with saidnotch, spring .9 on the sleeve H, and collar '1' on the shaft E, the armJ attached to plate A by insulating-pieces 1.: 7t, and contacting withthe disk 11, and the strip L, attached on outside of plate A, by thescrews jj and contacting with the pin 1 in the armature-shaft, thearrangement being such that when the machine is at rest a short circuitis made through the arm J and disk It as and for the purpose specified.

JOSEPH A. lVlll lllilillfi lVit nesses:

mo. W. Tmmrrs, LnwIs XV. Fonn.

